Configure the IP address settings for the router (R1), the computers (PC1 and PC2), and the switch (S1) for the network provided in Figure 1. Use the IP addresses provided in Table 1.

```
R1
R1#
R1# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
R1(config)# interface fa0/0
R1(config-if)# ip address 192.168.21.1 255.255.255.240
R1(config-if)# no shut
R1(config-if)#

PC1
C:\> ip address 192.168.21.8 255.255.255.240
C:\> gateway 192.168.21.1

PC2
C:\> ip address 192.168.21.6 255.255.255.240
C:\> gateway 192.168.21.1

S1
C:\> ip address 192.168.21.5 255.255.255.240
C:\> gateway 192.168.21.1
```